********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 20 January 2011 Vol. XXIV No. 003 ______________________________________________________________________ GENERAL INFORMATION: To receive this information electronically, contact: ser7@maia.usno.navy.mil or use MJD = Julian Date - 2 400 000.5 days UT2-UT1 = 0.022 sin(2*pi*T) - 0.012 cos(2*pi*T) - 0.006 sin(4*pi*T) + 0.007 cos(4*pi*T) where pi = 3.14159265... and T is the date in Besselian years. TT = TAI + 32.184 seconds DUT1= (UT1-UTC) transmitted with time signals = -0.2 seconds beginning 6 January 2011 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 34.000 000 seconds ********************************************************************** * As of Bulletin A Vol. XXIV, No. 005, on 03 Feb 2011, we will * * adopt the new 08C04 EOP system. This will result in a jump of * * less than 0.1 mas in polar motion and 10 us in UT1-UTC. The * * only users who need to be concerned with this change are those * * who need EOP accuracy to better than 0.1 mas (~0.3 cm at the * * Earth's surface, ~1.3 cm at GPS orbit). * ********************************************************************** ________________________________________________________________________ The contributed observations used in the preparation of this Bulletin are available at . The contributed analysis results are based on data from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), the Global Positioning System (GPS) satellites, Lunar Laser Ranging (LLR), and meteorological predictions of variations in Atmospheric Angular Momentum (AAM). ________________________________________________________________________ COMBINED EARTH ORIENTATION PARAMETERS: IERS Rapid Service MJD x error y error UT1-UTC error " " " " s s 11 1 14 55575 0.09532 .00010 0.19604 .00010 -0.145951 0.000022 11 1 15 55576 0.09233 .00010 0.19586 .00009 -0.146325 0.000020 11 1 16 55577 0.08886 .00009 0.19573 .00009 -0.146624 0.000020 11 1 17 55578 0.08502 .00009 0.19548 .00009 -0.146882 0.000019 11 1 18 55579 0.08135 .00009 0.19501 .00009 -0.147177 0.000065 11 1 19 55580 0.07795 .00009 0.19479 .00009 -0.147556 0.000065 11 1 20 55581 0.07465 .00010 0.19482 .00009 -0.148081 0.000055 _______________________________________________________________________ PREDICTIONS: The following formulas will not reproduce the predictions given below, but may be used to extend the predictions beyond the end of this table. x = 0.0740 - 0.0241 cos A - 0.1129 sin A + 0.0211 cos C - 0.0357 sin C y = 0.3310 - 0.1006 cos A + 0.0254 sin A - 0.0357 cos C - 0.0211 sin C UT1-UTC = -0.1445 - 0.00071 (MJD - 55589) - (UT2-UT1) where A = 2*pi*(MJD-55581)/365.25 and C = 2*pi*(MJD-55581)/435. TAI-UTC(MJD 55582) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55581)**0.80 S t = 0.00025 (MJD-55581)**0.75 Estimated accuracies are: Predictions 10 d 20 d 30 d 40 d Polar coord's 0.004 0.007 0.010 0.013 UT1-UTC 0.0014 0.0024 0.0032 0.0040 MJD x(arcsec) y(arcsec) UT1-UTC(sec) 2011 1 21 55582 0.0719 0.1948 -0.14883 2011 1 22 55583 0.0691 0.1949 -0.14977 2011 1 23 55584 0.0664 0.1952 -0.15082 2011 1 24 55585 0.0639 0.1955 -0.15188 2011 1 25 55586 0.0614 0.1958 -0.15280 2011 1 26 55587 0.0590 0.1962 -0.15352 2011 1 27 55588 0.0567 0.1967 -0.15400 2011 1 28 55589 0.0544 0.1971 -0.15427 2011 1 29 55590 0.0521 0.1977 -0.15438 2011 1 30 55591 0.0500 0.1982 -0.15442 2011 1 31 55592 0.0478 0.1989 -0.15449 2011 2 1 55593 0.0457 0.1996 -0.15464 2011 2 2 55594 0.0437 0.2003 -0.15495 2011 2 3 55595 0.0417 0.2010 -0.15545 2011 2 4 55596 0.0397 0.2018 -0.15610 2011 2 5 55597 0.0377 0.2026 -0.15686 2011 2 6 55598 0.0357 0.2035 -0.15766 2011 2 7 55599 0.0338 0.2044 -0.15845 2011 2 8 55600 0.0319 0.2053 -0.15918 2011 2 9 55601 0.0301 0.2063 -0.15982 2011 2 10 55602 0.0282 0.2073 -0.16037 2011 2 11 55603 0.0264 0.2083 -0.16082 2011 2 12 55604 0.0246 0.2094 -0.16118 2011 2 13 55605 0.0229 0.2104 -0.16149 2011 2 14 55606 0.0211 0.2116 -0.16183 2011 2 15 55607 0.0194 0.2127 -0.16227 2011 2 16 55608 0.0177 0.2139 -0.16289 2011 2 17 55609 0.0161 0.2151 -0.16377 2011 2 18 55610 0.0144 0.2163 -0.16492 2011 2 19 55611 0.0128 0.2175 -0.16628 2011 2 20 55612 0.0112 0.2188 -0.16773 2011 2 21 55613 0.0096 0.2201 -0.16913 2011 2 22 55614 0.0081 0.2214 -0.17036 2011 2 23 55615 0.0066 0.2228 -0.17135 2011 2 24 55616 0.0051 0.2241 -0.17210 2011 2 25 55617 0.0036 0.2255 -0.17267 2011 2 26 55618 0.0022 0.2269 -0.17314 2011 2 27 55619 0.0008 0.2284 -0.17361 2011 2 28 55620 -0.0006 0.2298 -0.17414 2011 3 1 55621 -0.0020 0.2313 -0.17478 2011 3 2 55622 -0.0033 0.2328 -0.17555 2011 3 3 55623 -0.0046 0.2343 -0.17644 2011 3 4 55624 -0.0059 0.2359 -0.17743 2011 3 5 55625 -0.0071 0.2374 -0.17850 2011 3 6 55626 -0.0083 0.2390 -0.17958 2011 3 7 55627 -0.0095 0.2406 -0.18064 2011 3 8 55628 -0.0107 0.2422 -0.18163 2011 3 9 55629 -0.0118 0.2439 -0.18252 2011 3 10 55630 -0.0129 0.2455 -0.18331 2011 3 11 55631 -0.0140 0.2472 -0.18401 2011 3 12 55632 -0.0150 0.2489 -0.18466 2011 3 13 55633 -0.0160 0.2506 -0.18530 2011 3 14 55634 -0.0170 0.2523 -0.18600 2011 3 15 55635 -0.0180 0.2540 -0.18685 2011 3 16 55636 -0.0189 0.2557 -0.18792 2011 3 17 55637 -0.0198 0.2575 -0.18927 2011 3 18 55638 -0.0206 0.2593 -0.19088 2011 3 19 55639 -0.0214 0.2610 -0.19267 2011 3 20 55640 -0.0222 0.2628 -0.19449 2011 3 21 55641 -0.0230 0.2646 -0.19621 2011 3 22 55642 -0.0237 0.2665 -0.19771 2011 3 23 55643 -0.0244 0.2683 -0.19895 2011 3 24 55644 -0.0251 0.2701 -0.19997 2011 3 25 55645 -0.0257 0.2720 -0.20084 2011 3 26 55646 -0.0263 0.2738 -0.20166 2011 3 27 55647 -0.0269 0.2757 -0.20251 2011 3 28 55648 -0.0274 0.2776 -0.20344 2011 3 29 55649 -0.0280 0.2795 -0.20446 2011 3 30 55650 -0.0284 0.2813 -0.20558 2011 3 31 55651 -0.0289 0.2832 -0.20678 2011 4 1 55652 -0.0293 0.2851 -0.20803 2011 4 2 55653 -0.0297 0.2870 -0.20930 2011 4 3 55654 -0.0300 0.2890 -0.21052 2011 4 4 55655 -0.0303 0.2909 -0.21166 2011 4 5 55656 -0.0306 0.2928 -0.21269 2011 4 6 55657 -0.0309 0.2947 -0.21360 2011 4 7 55658 -0.0311 0.2967 -0.21439 2011 4 8 55659 -0.0313 0.2986 -0.21509 2011 4 9 55660 -0.0314 0.3005 -0.21575 2011 4 10 55661 -0.0315 0.3025 -0.21643 2011 4 11 55662 -0.0316 0.3044 -0.21721 2011 4 12 55663 -0.0317 0.3063 -0.21815 2011 4 13 55664 -0.0317 0.3083 -0.21932 2011 4 14 55665 -0.0317 0.3102 -0.22074 2011 4 15 55666 -0.0317 0.3122 -0.22236 2011 4 16 55667 -0.0316 0.3141 -0.22408 2011 4 17 55668 -0.0315 0.3160 -0.22576 2011 4 18 55669 -0.0314 0.3180 -0.22728 2011 4 19 55670 -0.0312 0.3199 -0.22855 2011 4 20 55671 -0.0310 0.3218 -0.22956 2011 4 21 55672 -0.0308 0.3238 -0.23038 2011 4 22 55673 -0.0305 0.3257 -0.23109 2011 4 23 55674 -0.0302 0.3276 -0.23180 2011 4 24 55675 -0.0299 0.3295 -0.23255 2011 4 25 55676 -0.0296 0.3314 -0.23339 2011 4 26 55677 -0.0292 0.3333 -0.23433 2011 4 27 55678 -0.0288 0.3352 -0.23533 2011 4 28 55679 -0.0284 0.3371 -0.23638 2011 4 29 55680 -0.0279 0.3390 -0.23744 2011 4 30 55681 -0.0274 0.3408 -0.23846 2011 5 1 55682 -0.0269 0.3427 -0.23941 2011 5 2 55683 -0.0263 0.3446 -0.24025 2011 5 3 55684 -0.0257 0.3464 -0.24095 2011 5 4 55685 -0.0251 0.3482 -0.24153 2011 5 5 55686 -0.0245 0.3501 -0.24201 2011 5 6 55687 -0.0238 0.3519 -0.24242 2011 5 7 55688 -0.0231 0.3537 -0.24282 2011 5 8 55689 -0.0224 0.3555 -0.24328 2011 5 9 55690 -0.0216 0.3573 -0.24383 2011 5 10 55691 -0.0208 0.3590 -0.24456 2011 5 11 55692 -0.0200 0.3608 -0.24549 2011 5 12 55693 -0.0192 0.3625 -0.24661 2011 5 13 55694 -0.0183 0.3643 -0.24783 2011 5 14 55695 -0.0174 0.3660 -0.24907 2011 5 15 55696 -0.0165 0.3677 -0.25019 2011 5 16 55697 -0.0156 0.3694 -0.25111 2011 5 17 55698 -0.0146 0.3711 -0.25179 2011 5 18 55699 -0.0137 0.3727 -0.25224 2011 5 19 55700 -0.0126 0.3744 -0.25255 2011 5 20 55701 -0.0116 0.3760 -0.25280 2011 5 21 55702 -0.0106 0.3776 -0.25307 2011 5 22 55703 -0.0095 0.3792 -0.25342 2011 5 23 55704 -0.0084 0.3808 -0.25386 2011 5 24 55705 -0.0072 0.3824 -0.25437 2011 5 25 55706 -0.0061 0.3839 -0.25492 2011 5 26 55707 -0.0049 0.3854 -0.25547 2011 5 27 55708 -0.0037 0.3869 -0.25600 2011 5 28 55709 -0.0025 0.3884 -0.25644 2011 5 29 55710 -0.0013 0.3899 -0.25678 2011 5 30 55711 0.0000 0.3913 -0.25698 2011 5 31 55712 0.0012 0.3928 -0.25705 2011 6 1 55713 0.0025 0.3942 -0.25701 2011 6 2 55714 0.0038 0.3956 -0.25688 2011 6 3 55715 0.0052 0.3969 -0.25674 2011 6 4 55716 0.0065 0.3983 -0.25663 2011 6 5 55717 0.0079 0.3996 -0.25664 2011 6 6 55718 0.0093 0.4009 -0.25681 2011 6 7 55719 0.0107 0.4022 -0.25716 2011 6 8 55720 0.0121 0.4035 -0.25768 2011 6 9 55721 0.0135 0.4047 -0.25831 2011 6 10 55722 0.0150 0.4060 -0.25895 2011 6 11 55723 0.0164 0.4072 -0.25951 2011 6 12 55724 0.0179 0.4083 -0.25991 2011 6 13 55725 0.0194 0.4095 -0.26009 2011 6 14 55726 0.0209 0.4106 -0.26006 2011 6 15 55727 0.0225 0.4117 -0.25986 2011 6 16 55728 0.0240 0.4128 -0.25959 2011 6 17 55729 0.0255 0.4139 -0.25933 2011 6 18 55730 0.0271 0.4149 -0.25915 2011 6 19 55731 0.0287 0.4159 -0.25907 2011 6 20 55732 0.0303 0.4169 -0.25908 2011 6 21 55733 0.0319 0.4179 -0.25915 2011 6 22 55734 0.0335 0.4188 -0.25925 2011 6 23 55735 0.0351 0.4197 -0.25933 2011 6 24 55736 0.0367 0.4206 -0.25936 2011 6 25 55737 0.0383 0.4215 -0.25928 2011 6 26 55738 0.0400 0.4223 -0.25909 2011 6 27 55739 0.0416 0.4231 -0.25878 2011 6 28 55740 0.0433 0.4239 -0.25834 2011 6 29 55741 0.0450 0.4247 -0.25783 2011 6 30 55742 0.0466 0.4254 -0.25728 2011 7 1 55743 0.0483 0.4261 -0.25678 2011 7 2 55744 0.0500 0.4268 -0.25638 2011 7 3 55745 0.0517 0.4275 -0.25615 2011 7 4 55746 0.0534 0.4281 -0.25613 2011 7 5 55747 0.0551 0.4287 -0.25629 2011 7 6 55748 0.0568 0.4293 -0.25658 2011 7 7 55749 0.0585 0.4298 -0.25690 2011 7 8 55750 0.0602 0.4304 -0.25715 2011 7 9 55751 0.0620 0.4309 -0.25725 2011 7 10 55752 0.0637 0.4314 -0.25714 2011 7 11 55753 0.0654 0.4318 -0.25683 2011 7 12 55754 0.0671 0.4322 -0.25636 2011 7 13 55755 0.0689 0.4326 -0.25580 2011 7 14 55756 0.0706 0.4330 -0.25523 2011 7 15 55757 0.0723 0.4334 -0.25473 2011 7 16 55758 0.0740 0.4337 -0.25433 2011 7 17 55759 0.0758 0.4340 -0.25404 2011 7 18 55760 0.0775 0.4342 -0.25384 2011 7 19 55761 0.0792 0.4345 -0.25368 2011 7 20 55762 0.0809 0.4347 -0.25352 2011 7 21 55763 0.0826 0.4349 -0.25330 2011 7 22 55764 0.0844 0.4351 -0.25299 2011 7 23 55765 0.0861 0.4352 -0.25256 2011 7 24 55766 0.0878 0.4353 -0.25198 2011 7 25 55767 0.0895 0.4354 -0.25127 2011 7 26 55768 0.0912 0.4355 -0.25045 2011 7 27 55769 0.0929 0.4355 -0.24957 2011 7 28 55770 0.0946 0.4355 -0.24870 2011 7 29 55771 0.0963 0.4355 -0.24792 2011 7 30 55772 0.0979 0.4355 -0.24734 2011 7 31 55773 0.0996 0.4354 -0.24702 2011 8 1 55774 0.1013 0.4353 -0.24698 2011 8 2 55775 0.1029 0.4352 -0.24717 2011 8 3 55776 0.1046 0.4350 -0.24749 2011 8 4 55777 0.1062 0.4349 -0.24780 2011 8 5 55778 0.1079 0.4347 -0.24799 2011 8 6 55779 0.1095 0.4345 -0.24798 2011 8 7 55780 0.1111 0.4342 -0.24776 2011 8 8 55781 0.1127 0.4340 -0.24735 2011 8 9 55782 0.1143 0.4337 -0.24683 2011 8 10 55783 0.1159 0.4334 -0.24629 2011 8 11 55784 0.1175 0.4330 -0.24581 2011 8 12 55785 0.1190 0.4327 -0.24543 2011 8 13 55786 0.1206 0.4323 -0.24519 2011 8 14 55787 0.1221 0.4319 -0.24507 2011 8 15 55788 0.1236 0.4315 -0.24503 2011 8 16 55789 0.1252 0.4310 -0.24502 2011 8 17 55790 0.1267 0.4306 -0.24499 2011 8 18 55791 0.1281 0.4301 -0.24490 2011 8 19 55792 0.1296 0.4296 -0.24473 2011 8 20 55793 0.1311 0.4290 -0.24446 2011 8 21 55794 0.1325 0.4285 -0.24410 2011 8 22 55795 0.1340 0.4279 -0.24366 2011 8 23 55796 0.1354 0.4273 -0.24320 2011 8 24 55797 0.1368 0.4267 -0.24278 2011 8 25 55798 0.1382 0.4260 -0.24245 2011 8 26 55799 0.1396 0.4254 -0.24229 2011 8 27 55800 0.1409 0.4247 -0.24235 2011 8 28 55801 0.1423 0.4240 -0.24268 2011 8 29 55802 0.1436 0.4233 -0.24323 2011 8 30 55803 0.1449 0.4225 -0.24392 2011 8 31 55804 0.1462 0.4218 -0.24462 2011 9 1 55805 0.1475 0.4210 -0.24521 2011 9 2 55806 0.1487 0.4202 -0.24559 2011 9 3 55807 0.1499 0.4194 -0.24575 2011 9 4 55808 0.1512 0.4186 -0.24570 2011 9 5 55809 0.1524 0.4177 -0.24553 2011 9 6 55810 0.1536 0.4169 -0.24534 2011 9 7 55811 0.1547 0.4160 -0.24519 2011 9 8 55812 0.1559 0.4151 -0.24519 2011 9 9 55813 0.1570 0.4142 -0.24541 2011 9 10 55814 0.1581 0.4132 -0.24575 2011 9 11 55815 0.1592 0.4123 -0.24620 2011 9 12 55816 0.1603 0.4113 -0.24675 2011 9 13 55817 0.1613 0.4104 -0.24739 2011 9 14 55818 0.1624 0.4094 -0.24807 2011 9 15 55819 0.1634 0.4084 -0.24871 2011 9 16 55820 0.1644 0.4073 -0.24927 2011 9 17 55821 0.1653 0.4063 -0.24974 2011 9 18 55822 0.1663 0.4053 -0.25009 2011 9 19 55823 0.1672 0.4042 -0.25037 2011 9 20 55824 0.1681 0.4031 -0.25060 2011 9 21 55825 0.1690 0.4021 -0.25093 2011 9 22 55826 0.1699 0.4010 -0.25141 2011 9 23 55827 0.1707 0.3998 -0.25212 2011 9 24 55828 0.1716 0.3987 -0.25313 2011 9 25 55829 0.1724 0.3976 -0.25442 2011 9 26 55830 0.1732 0.3965 -0.25594 2011 9 27 55831 0.1739 0.3953 -0.25756 2011 9 28 55832 0.1747 0.3941 -0.25917 2011 9 29 55833 0.1754 0.3930 -0.26069 2011 9 30 55834 0.1761 0.3918 -0.26210 2011 10 1 55835 0.1768 0.3906 -0.26333 2011 10 2 55836 0.1774 0.3894 -0.26431 2011 10 3 55837 0.1781 0.3882 -0.26518 2011 10 4 55838 0.1787 0.3870 -0.26611 2011 10 5 55839 0.1793 0.3858 -0.26715 2011 10 6 55840 0.1798 0.3845 -0.26834 2011 10 7 55841 0.1804 0.3833 -0.26960 2011 10 8 55842 0.1809 0.3821 -0.27091 2011 10 9 55843 0.1814 0.3808 -0.27227 2011 10 10 55844 0.1819 0.3795 -0.27361 2011 10 11 55845 0.1823 0.3783 -0.27486 2011 10 12 55846 0.1828 0.3770 -0.27602 2011 10 13 55847 0.1832 0.3758 -0.27703 2011 10 14 55848 0.1836 0.3745 -0.27792 2011 10 15 55849 0.1840 0.3732 -0.27874 2011 10 16 55850 0.1843 0.3719 -0.27951 2011 10 17 55851 0.1846 0.3706 -0.28023 2011 10 18 55852 0.1849 0.3693 -0.28090 2011 10 19 55853 0.1852 0.3680 -0.28154 2011 10 20 55854 0.1855 0.3668 -0.28221 2011 10 21 55855 0.1857 0.3655 -0.28296 2011 10 22 55856 0.1859 0.3642 -0.28389 2011 10 23 55857 0.1861 0.3629 -0.28504 2011 10 24 55858 0.1863 0.3616 -0.28639 2011 10 25 55859 0.1865 0.3603 -0.28786 2011 10 26 55860 0.1866 0.3590 -0.28935 2011 10 27 55861 0.1867 0.3577 -0.29073 2011 10 28 55862 0.1868 0.3564 -0.29196 2011 10 29 55863 0.1869 0.3551 -0.29306 2011 10 30 55864 0.1869 0.3538 -0.29408 2011 10 31 55865 0.1870 0.3525 -0.29509 2011 11 1 55866 0.1870 0.3512 -0.29609 2011 11 2 55867 0.1870 0.3499 -0.29712 2011 11 3 55868 0.1869 0.3486 -0.29825 2011 11 4 55869 0.1869 0.3473 -0.29946 2011 11 5 55870 0.1868 0.3460 -0.30075 2011 11 6 55871 0.1867 0.3447 -0.30206 2011 11 7 55872 0.1866 0.3434 -0.30332 2011 11 8 55873 0.1865 0.3421 -0.30452 2011 11 9 55874 0.1863 0.3409 -0.30564 2011 11 10 55875 0.1862 0.3396 -0.30666 2011 11 11 55876 0.1860 0.3383 -0.30755 2011 11 12 55877 0.1858 0.3371 -0.30835 2011 11 13 55878 0.1856 0.3358 -0.30909 2011 11 14 55879 0.1853 0.3346 -0.30977 2011 11 15 55880 0.1851 0.3333 -0.31044 2011 11 16 55881 0.1848 0.3321 -0.31120 2011 11 17 55882 0.1845 0.3309 -0.31208 2011 11 18 55883 0.1842 0.3296 -0.31315 2011 11 19 55884 0.1838 0.3284 -0.31444 2011 11 20 55885 0.1835 0.3272 -0.31585 2011 11 21 55886 0.1831 0.3260 -0.31731 2011 11 22 55887 0.1828 0.3248 -0.31874 2011 11 23 55888 0.1824 0.3236 -0.31998 2011 11 24 55889 0.1819 0.3224 -0.32099 2011 11 25 55890 0.1815 0.3213 -0.32178 2011 11 26 55891 0.1811 0.3201 -0.32246 2011 11 27 55892 0.1806 0.3189 -0.32312 2011 11 28 55893 0.1801 0.3178 -0.32388 2011 11 29 55894 0.1796 0.3167 -0.32469 2011 11 30 55895 0.1791 0.3155 -0.32547 2011 12 1 55896 0.1786 0.3144 -0.32624 2011 12 2 55897 0.1781 0.3133 -0.32703 2011 12 3 55898 0.1775 0.3122 -0.32775 2011 12 4 55899 0.1770 0.3111 -0.32834 2011 12 5 55900 0.1764 0.3101 -0.32885 2011 12 6 55901 0.1758 0.3090 -0.32927 2011 12 7 55902 0.1752 0.3079 -0.32962 2011 12 8 55903 0.1746 0.3069 -0.32991 2011 12 9 55904 0.1740 0.3059 -0.33012 2011 12 10 55905 0.1733 0.3048 -0.33030 2011 12 11 55906 0.1727 0.3038 -0.33048 2011 12 12 55907 0.1720 0.3028 -0.33063 2011 12 13 55908 0.1713 0.3019 -0.33083 2011 12 14 55909 0.1706 0.3009 -0.33115 2011 12 15 55910 0.1700 0.2999 -0.33171 2011 12 16 55911 0.1692 0.2990 -0.33259 2011 12 17 55912 0.1685 0.2980 -0.33365 2011 12 18 55913 0.1678 0.2971 -0.33486 2011 12 19 55914 0.1671 0.2962 -0.33614 2011 12 20 55915 0.1663 0.2953 -0.33727 2011 12 21 55916 0.1656 0.2944 -0.33820 2011 12 22 55917 0.1648 0.2936 -0.33900 2011 12 23 55918 0.1640 0.2927 -0.33966 2011 12 24 55919 0.1633 0.2919 -0.34027 2011 12 25 55920 0.1625 0.2910 -0.34089 2011 12 26 55921 0.1617 0.2902 -0.34157 2011 12 27 55922 0.1609 0.2894 -0.34242 2011 12 28 55923 0.1601 0.2886 -0.34338 2011 12 29 55924 0.1592 0.2878 -0.34439 2011 12 30 55925 0.1584 0.2871 -0.34542 2011 12 31 55926 0.1576 0.2863 -0.34647 2012 1 1 55927 0.1568 0.2856 -0.34745 2012 1 2 55928 0.1559 0.2849 -0.34834 2012 1 3 55929 0.1551 0.2842 -0.34919 2012 1 4 55930 0.1542 0.2835 -0.34997 2012 1 5 55931 0.1534 0.2828 -0.35064 2012 1 6 55932 0.1525 0.2822 -0.35124 2012 1 7 55933 0.1516 0.2815 -0.35180 2012 1 8 55934 0.1508 0.2809 -0.35236 2012 1 9 55935 0.1499 0.2803 -0.35292 2012 1 10 55936 0.1490 0.2797 -0.35360 2012 1 11 55937 0.1481 0.2791 -0.35440 2012 1 12 55938 0.1473 0.2785 -0.35535 2012 1 13 55939 0.1464 0.2780 -0.35643 2012 1 14 55940 0.1455 0.2774 -0.35758 2012 1 15 55941 0.1446 0.2769 -0.35872 2012 1 16 55942 0.1437 0.2764 -0.35981 2012 1 17 55943 0.1428 0.2759 -0.36084 2012 1 18 55944 0.1419 0.2754 -0.36178 2012 1 19 55945 0.1410 0.2749 -0.36262 2012 1 20 55946 0.1401 0.2745 -0.36338 These predictions are based on all announced leap seconds. CELESTIAL POLE OFFSET SERIES: NEOS Celestial Pole Offset Series MJD dpsi error deps error (msec. of arc) 55559 -67.37 0.21 -6.23 0.34 55560 -67.48 0.21 -6.13 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55559 0.153 0.084 -0.217 0.340 55560 0.136 0.084 -0.224 0.340 The recommended software to predict celestial pole offsets can be found at and software for the calculation of the dX and dY components with respect to IAU2000A Nutation/Precession Theory can be found at the web site in Chapter 5 Section 5.5 of the IERS Conventions.